Bottles for flowable adhesive

ABSTRACT

A bottle for flowable adhesive includes an outer tube made of soft metal and an inner tube made from a material that allows the inner tube to restore its original shape when an external squeezing force applied to the outer tube is released. The inner tube has an outer diameter the same as an inner diameter of the outer tube, with an outer peripheral face of the inner tube being in intimate contact with an inner peripheral face of the outer tube. When the outer tube is squeezed, the flowable adhesive contained in the inner tube is dispensed through the spout of the dispensing member. The outer tube restores its original shape when the external squeezing force applied to the outer tube is released, as the inner tube pushes the outer tube outwardly when the inner tube is restoring its original shape.

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] The present invention relates to bottles for flowable adhesive.

[0003] 2. Description of the Related Art

[0004] A typical bottle for containing flowable adhesive is generallymade from plastic material, and the user may squeeze the plastic bottleto make the flowable adhesive flow out of the bottle via a dispensingmember. However, the plastic bottle could not be used to containadhesives sensitive to water, such as cyano acrylic acid resin andsolvent-containing adhesives, as these adhesives would deteriorate inthe plastic bottle.

[0005] There are also bottles made from soft metal such as aluminum forcontaining the adhesives sensitive to water. A bottle made from softmetal is impermeable, which is particularly useful to steam. Thus, thebottle made from soft metal is useful for containing flowable adhesives,particularly cyano acrylic acid resin. However, when the bottle issqueezed, it is maintained in the squeezed state and could not restoreits original shape. As a result, the adhesive in the bottle could notstop flowing out of the bottle unless a pressure balance is obtainedagain. Further, when the bottle made of soft metal is not full offlowable adhesive, it is difficult to squeeze the flowable adhesive outof the bottle, and it is difficult for the user to squeeze the desiredamount of the flowable adhesive out of the bottle.

SUMMARY OF THE INVENTION

[0006] In accordance with the present invention, a bottle for flowableadhesive includes an outer tube made of soft metal and an inner tubemade from a material that allows the inner tube to restore its originalshape when an external squeezing force applied to the outer tube isreleased. The inner tube has an outer diameter the same as an innerdiameter of the outer tube, with an outer peripheral face of the innertube being in intimate contact with an inner peripheral face of theouter tube.

[0007] Since the outer tube is made from soft metal such as aluminum, itis airtight. When the outer tube is squeezed, the flowable adhesivecontained in the inner tube is dispensed through the spout of thedispensing member. The outer tube restores its original shape when theexternal squeezing force applied to the outer tube is released, as theinner tube pushes the outer tube outwardly when the inner tube isrestoring its original shape. Further, the negative pressure in thebottle may suck a portion of the dispensed flowable adhesive back intothe bottle, thereby allowing the user to control the desired amount tobe used.

[0008] Other objects, advantages, and novel features of the inventionwill become more apparent from the following detailed description whentaken in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

[0009]FIG. 1 is an exploded perspective view of a bottle for flowableadhesive in accordance with the present invention.

[0010]FIG. 2 is a sectional view of the bottle for flowable adhesive inaccordance with the present invention.

[0011]FIG. 3 is a perspective view of another embodiment of an innertube of the bottle for flowable adhesive in accordance with the presentinvention.

[0012]FIG. 4 is a sectional view of a bottle using the inner tube inFIG. 3.

[0013]FIG. 5 is a perspective view of a further embodiment of the innertube of the bottle for flowable adhesive in accordance with the presentinvention.

[0014]FIG. 6 is a sectional view of a bottle using the inner tube inFIG. 5.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Referring to FIGS. 1 and 2, a bottle for flowable adhesive inaccordance with the present invention generally comprises an inner tube2, an outer tube 1, and a dispensing member 10. The outer tube 1 is madefrom soft metal such as aluminum. A mouth 11 is formed on an upper endof the outer tube 1. A film 14 is used to seal the mouth 11. At thefirst time using the bottle, the film 14 is pierced to allow theflowable adhesive contained in the bottle to flow out of the bottle. Themouth 11 has an outer threading 12 for threading engagement with aninner threading 13 of the dispensing member 10 having a spout 15. Theouter tube 1 is open at the bottom end thereof for filling flowableadhesive, and the bottom end is sealed after filling.

[0016] The inner tube 2 is mounted in the outer tube 1 and made frompolyethylene, polypropylene, or Teflon. Thus, the inner tube 2 mayrestore its original shape after a squeezing force applied to it isreleased. Preferably, the inner tube 2 has an outer diameter the same asan inner diameter of the outer tube 1. Thus, an outer peripheral face ofthe inner tube 2 is in intimate contact with an inner peripheral face ofthe outer tube 1 when the inner tube 2 is mounted in the outer tube 1.The inner tube 2 may include an opening 21 in the periphery thereof(FIGS. 3 and 4) or a cutout 22 in the periphery thereof (FIGS. 5 and 6).The opening 21 or cutout 22 of the inner tube 2 assists in rapidrestoration of the shape of the inner tube 2 when the external squeezingforce applied to the outer tube 1 is released.

[0017] Since the outer tube 1 is made from soft metal such as aluminum,it is airtight. When the outer tube 1 is squeezed, the flowable adhesivecontained in the inner tube 2 is dispensed through the spout 15 of thedispensing member 10. The outer tube 1 restores its original shape whenthe external squeezing force applied to the outer tube 1 is released, asthe inner tube 2 pushes the outer tube 1 outwardly when the inner tube 2is restoring its original shape. Further, the negative pressure in thebottle may suck a portion of the dispensed flowable adhesive back intothe bottle, thereby allowing the user to control the desired amount tobe used.

[0018] Although the invention has been explained in relation to itspreferred embodiment, it is to be understood that many other possiblemodifications and variations can be made without departing from thescope of the invention as hereinafter claimed.

What is claimed is:
 1. A bottle for flowable adhesive comprising: anouter tube made of soft metal; and an inner tube made from a materialthat allows the inner tube to restore its original shape when anexternal squeezing force applied to the outer tube is released, theinner tube having an outer diameter the same as an inner diameter of theouter tube, with an outer peripheral face of the inner tube being inintimate contact with an inner peripheral face of the outer tube.
 2. Thebottle for flowable adhesive as claimed in claim 1, wherein the outertube includes a mouth with an outer threading for threading engagementwith an inner threading of a dispensing member.
 3. The bottle forflowable adhesive as claimed in claim 1, wherein the inner tube includesat least one opening in a periphery thereof.
 4. The bottle for flowableadhesive as claimed in claim 1m wherein the inner tube includes at leastone cutout in a periphery thereof.